Cap of a bottle



FIG. 1 is a perspective view of a cap of a bottle that illustrates the novel design;

FIG. 2 is a front view of the cap of FIG. 1;

FIG. 3 is a top view of the cap of FIG. 1;

FIG. 4 is a side elevational view of the cap of FIG. 1; and,

FIG. 5 is a back view of the cap of FIG. 1. 

The ornamental design for a cap of a bottle, as shown and described. 